from fastapi import FastAPI, HTTPException

from .config import ServerSettings
from .grid import GridManager
from .models import ActionPayload, GridDescriptor, GridInitRequest
from .planner import GridPlanner


settings = ServerSettings()
manager = GridManager(settings)
planner = GridPlanner()

app = FastAPI(
    title="Clickthrough",
    description="Grid-aware surface that lets an agent plan clicks, drags, and typing on a fake screenshot",
    version="0.2.0",
)


@app.get("/health")
def health_check() -> dict[str, str]:
    return {"status": "ok", "grid_count": str(manager.grid_count)}


@app.post("/grid/init", response_model=GridDescriptor)
def init_grid(request: GridInitRequest) -> GridDescriptor:
    grid = manager.create_grid(request)
    return grid.describe()


@app.post("/grid/action")
def apply_action(payload: ActionPayload):
    try:
        grid = manager.get_grid(payload.grid_id)
    except KeyError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    return grid.apply_action(payload)


@app.get("/grid/{grid_id}/summary")
def grid_summary(grid_id: str):
    try:
        grid = manager.get_grid(grid_id)
    except KeyError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    descriptor = grid.describe()
    return {
        "grid_id": grid_id,
        "summary": planner.describe(descriptor),
        "details": grid.summary(),
        "descriptor": descriptor,
    }


@app.get("/grid/{grid_id}/history")
def grid_history(grid_id: str):
    try:
        history = manager.get_history(grid_id)
    except KeyError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    return {"grid_id": grid_id, "history": history}